[INFO] fetching crate gc-sequence 0.2.0...
[INFO] checking gc-sequence-0.2.0 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate gc-sequence 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate gc-sequence 0.2.0 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gc-sequence 0.2.0
[INFO] finished tweaking crates.io crate gc-sequence 0.2.0
[INFO] tweaked toml for crates.io crate gc-sequence 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fac3df12bf49a5ad60574fb8e5d6aebb42a1b11787691cdf7bbdce5e4f213943
[INFO] running `Command { std: "docker" "start" "-a" "fac3df12bf49a5ad60574fb8e5d6aebb42a1b11787691cdf7bbdce5e4f213943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fac3df12bf49a5ad60574fb8e5d6aebb42a1b11787691cdf7bbdce5e4f213943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fac3df12bf49a5ad60574fb8e5d6aebb42a1b11787691cdf7bbdce5e4f213943", kill_on_drop: false }`
[INFO] [stdout] fac3df12bf49a5ad60574fb8e5d6aebb42a1b11787691cdf7bbdce5e4f213943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2339833c5829c168dabc6bce5c9e7238e06f6f907d44b56a0b858d76a2679b4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f2339833c5829c168dabc6bce5c9e7238e06f6f907d44b56a0b858d76a2679b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling gc-arena-derive v0.2.0
[INFO] [stderr]     Checking gc-arena v0.2.0
[INFO] [stderr]     Checking gc-sequence v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.96s
[INFO] running `Command { std: "docker" "inspect" "f2339833c5829c168dabc6bce5c9e7238e06f6f907d44b56a0b858d76a2679b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2339833c5829c168dabc6bce5c9e7238e06f6f907d44b56a0b858d76a2679b4", kill_on_drop: false }`
[INFO] [stdout] f2339833c5829c168dabc6bce5c9e7238e06f6f907d44b56a0b858d76a2679b4